/**
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://www.dspace.org/license/
*/
package org.dspace.app.webui.jsptag;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;
/**
* Tag for producing a popup window link. Takes advantage of Javascript to
* produce a small window that is brought to the front every time a popup link
* is pressed. If Javascript is not available, a simple HTML link is used as a
* fallback. The contents of the tag are used as the text of the link.
*
* Additionally, this will link to the "local" version of the URL, if a locally
* modified version exists.
*
* FIXME: Currently supports a single popup window at a hardcoded size; extra
* attributes could be added at a later date (e.g. name, width, height)
*
* @author Robert Tansley
* @version $Revision$
*/
public class PopupTag extends BodyTagSupport
{
/** Path of default JSP version */
private String page;
public PopupTag()
{
super();
}
/**
* Get the JSP to display (default version)
*
* @return the page to display
*/
public String getPage()
{
return page;
}
/**
* Set the JSP to display (default version)
*
* @param s
* the page to display
*/
public void setPage(String s)
{
page = s;
}
public int doAfterBody() throws JspException
{
/*
* The output is the following, with PAGE and TEXT replaced
* appropriately:
*
* <script type="text/javascript"> <!-- document.write(' <a href="#"
* onClick="var popupwin =
* window.open(\'PAGE\',\'dspacepopup\',\'height=600,width=550,resizable,scrollbars\');popupwin.focus();return
* false;">TEXT <\/a>'); // --> </script> <noscript> <a href="PAGE"
* target="dspacepopup">TEXT </a>. </noscript>
*
* The script writes a Javascripted link which opens the popup window
* 600x550, or brings it to the front if it's already open. If
* Javascript is not available, plain HTML link in the NOSCRIPT element
* is used.
*/
BodyContent bc = getBodyContent();
String linkText = bc.getString();
bc.clearBody();
HttpServletRequest hrq = (HttpServletRequest) pageContext.getRequest();
String actualPage = hrq.getContextPath() + page;
String html = "<script type=\"text/javascript\">\n"
+ "<!-- Javascript starts here\n"
+ "document.write('<a href=\"#\" onClick=\"var popupwin = window.open(\\'"
+ actualPage
+ "\\',\\'dspacepopup\\',\\'height=600,width=550,resizable,scrollbars\\');popupwin.focus();return false;\">"
+ linkText + "<\\/a>');\n" + "// -->\n"
+ "</script><noscript><a href=\"" + actualPage
+ "\" target=\"dspacepopup\">" + linkText + "</a></noscript>";
try
{
getPreviousOut().print(html);
}
catch (IOException ie)
{
throw new JspException(ie);
}
return SKIP_BODY;
}
}